311123423 has 12 divisors (see below), whose sum is σ = 354632040. Its totient is φ = 272072736.

The previous prime is 311123419. The next prime is 311123453. The reversal of 311123423 is 324321113.

It is not a de Polignac number, because 311123423 - 2² = 311123419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 311123395 and 311123404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311123453) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45236 + ... + 51657.

It is an arithmetic number, because the mean of its divisors is an integer number (29552670).

Almost surely, 2^311123423 is an apocalyptic number.

311123423 is a deficient number, since it is larger than the sum of its proper divisors (43508617).

311123423 is a wasteful number, since it uses less digits than its factorization.

311123423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96938 (or 96925 counting only the distinct ones).

The product of its digits is 432, while the sum is 20.

The square root of 311123423 is about 17638.6910795558. The cubic root of 311123423 is about 677.6065094913.

Adding to 311123423 its reverse (324321113), we get a palindrome (635444536).

The spelling of 311123423 in words is "three hundred eleven million, one hundred twenty-three thousand, four hundred twenty-three".